 Monday, February 05, 2018, 15:40, Keith C Ng, Primary Beamlines, Repair, 1A Q15 repair. 
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1.) Completed covering up 1A Q15.
2.) RH flask currently contains the 8 insulators removed from Q15. 3.6 mSv/h on contact, 40-60 uSv/h @ .5 m. Double bagged. Bag exterior was swiped
clean, inside was not checked (didn’t want to breach interior bag just to swipe components). |
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Thursday, February 01, 2018, 15:44, Keith C Ng, Primary Beamlines, Repair, q15 repair
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Correction that all supply side (even numbered insulators) ceramic insulators on Q15 have been replaced with new old stock insulators as of today. Beamlines
finds no power or water issues. Expected to cover up tomorrow moving on to the Q12 and Q13 magnet area next week.
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Wednesday, January 31, 2018, 15:28, Keith C Ng, Primary Beamlines, Repair, Q15 repair
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Beamlines has changed out another 2 insulators on Q15 after discovering two additional leaks. Insulators #2 & #4 were replaced. One of them failed
on installation (broken ceramic?) and was replaced by another stocked replacement. Magnet was pressure tested and now enegerized as part of power
testing. Doug P. expects repairs to be complete and to cover up the area by tomorrow. |
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Tuesday, January 23, 2018, 15:44, Keith C Ng, Primary Beamlines, Repair, 1AQ15 insulator repair
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Assisted beamlines in replacing 2 insulators on 1A Q15 magnet. #10 and #14 insulators were found to be leaking at the ceramic, where the stainless steel
fitting joins the insulator. They were both replaced. During re-installation of the #10 ceramic, the VCR coil termination broke off the coil end and a
new one with updated design (see TBP0379) had to be soldered back in its place. The original SS fittings are deemed to have problems in their construction |
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Thursday, July 27, 2017, 09:02, Keith C Ng, Primary Beamlines, Development, test
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| test |
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Thursday, March 16, 2017, 15:50, Keith C Ng, Primary Beamlines, Repair, collimator b transition to t2
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On Monday found leaking joint was the ring directly downstream of T2. Vacuum group has been spraying Vacseal (http://www.vacseal.net/Pages/default.aspx)
sealant over the last 3 days attempting to get it in between the flanges and have partial vacuum to draw in the fluid. Seven sprays have been completed
as of March 16th. |
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Wednesday, March 08, 2017, 16:05, Keith C Ng, Primary Beamlines, Repair, collimator joint repair
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Started uncovering the area above the T2 to Q13 joint:
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Monday, February 20, 2017, 15:58, Keith C Ng, M9, Development, t2 m9 job wrap up
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| Restored shielding to T2 M9 void, blocks seem more crooked compared to previous years. |
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Friday, February 17, 2017, 13:33, Keith C Ng, M9, Development, T2 M9 vacuum
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Leak checked the blank off at T2 M9 exit port with Dimo Y. and Edi D.V. (Vac Group) and they confirm it is leak tight. Blank off installed on the 15th,
pumping started on morning of the 16th and leak checked today in the morning on the 17th.
Starting to clean up work area. |
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Wednesday, February 15, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 blank off
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Installed the blank off on the T2 M9 exit port:
Blank off 2013 installation procedure: 2.5 turns of the preload nut, after pins
are engaged and springs are at free length. |
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Tuesday, February 14, 2017, 16:08, Keith C Ng, M9, Development, T2 M9 2015 vs 2017 comparison
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| Attached a quick comparison of M9 exit port flanges WRT indium remnants: looks roughly the same. Will attempt to install blanking plate tomorrow morning. |
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Friday, February 10, 2017, 15:53, Keith C Ng, M9, Development, t2 m9 job
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Installed all jigs and Alignment group did their shoots successfully. Used individual pins on the 15" target jig and worked ok. 8" target jig
has some previously undiscovered issues from the previous shoot from 2015 but did not affect this shoot. |
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Thursday, February 09, 2017, 16:14, Keith C Ng, M9, Development, t2 m9 alignment
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Prepared m9 and b1 flanges for accepting their target jigs. The target jigs need to be reset by alignment group, 15" was bumped and 8" lost
2 of the target balls into the beam line. Reflector balls were recovered with a magnet on a stick, contaminated with 250 CPM, need alignment group to decontaminate
and clean them before use and reset the two jigs. |
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Tuesday, February 07, 2017, 15:36, Keith C Ng, M9, Development, t2 m9 job
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- Removed blank off from t2 m9 port, had to pry off with screw driver via spring ears. Clean removal it seems.
- Blank off is 200 uSv @ .5 m, 5000 CPM above bg.
- looks like 2 knife steps all around with oozing on the left and right, 0 and 180 deg |
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Friday, February 03, 2017, 14:57, Keith C Ng, M9, Development, Removing shield blocks and leak check results.
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Removed temporary shielding blocks from M9 hole and placed in temporary bunker. Capped with 18' shielding block. Blank off ready to be removed and target
jigs ready to be installed, weather permitting.
Raw leak check results from vacuum group attached as pdf. |
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Wednesday, February 01, 2017, 15:34, Keith C Ng, M9, Development, T2 M9 Setup
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Finished setting up work area around T2 M9 front end.
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Monday, January 30, 2017, 12:01, Keith C Ng, M9, Development, T2 leak check with vac group
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Week of Jan 23 to 27:
- Uncovered shielding around T2 M9 area. |
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Thursday, March 31, 2016, 15:32, Keith C Ng, Primary Beamlines, Development, 1VM3 to 1VQ4 joint.
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Re-installed indium vacuum joint for 1VQ4, routing installation. R. Kuramoto sprayed silicone grease on to the threads and bushings on pin drive. Drove
down tapererd pins and stopped 1/16" short of old marker markings. RK. Commented on the drive screw bending under load, reversed drive 1/2 turn
to relieve the stress on the screw. |
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Wednesday, March 16, 2016, 17:57, Ron Kuramoto, Primary Beamlines, Development, 4VQ1&Q2 Removal 13x
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On 14March2016, 4VQ1&Q2 were removed from BL4V and lowered into the Vault basement B3 level where they were stored in the south west corner
on their respective wood pallets. The hot ends of both magnets were place against the west wall. 4VQ2 was lifted out first and moved temporarily
downstream where it was separated from its magnet stand. Q2 was then craned into the basement where it was tipped 45o to lay on the flat side |
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Wednesday, March 16, 2016, 17:19, Ron Kuramoto, Primary Beamlines, Development, 4VQ3 Removal
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On 8March2016, under W/P C2016-03-08-2, 4VQ3 was lifted out of BL4V with the vault orbit crane where it was first weighed then lifted onto the
RH flat deck rail dolly. It was then moved into the RH basement where it was surveyed before lifting it up onto the Red wagon cart in the RH loading
bay. It was then pulled to the Meson Hall loading bay by fork lift where and then over the Cycloton vault to the top of the E-Hall roof beams under |
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